There are several Business Schools located in South Korea that offers MBA Program.

Here I am providing list of all Business Schools for your reference:

BUSINESS SCHOOLS IN SOUTH KOREA

Korea University Business School (KUBS)
Seoul, South Korea

Sogang University Business School
Seoul, South Korea

Seoul National University (SNU) - Graduate School of Business
Seoul, South Korea

Hanynag University - Global Graduate School of Business
Seoul, South Korea

Sungkyukwan University (SKK) - Graduate School of Business
Seoul, South Korea

Inha University - College of Business Administration
Incheon, South Korea

Solbridge International School of Business
Daejeon, South Korea

Kyung Hee University - Graduate School of Business Administration (GSBA)
Seoul, South Korea

Chungnam National University
Daejeon, South Korea

Dongguk University Business School
Seoul, South Korea

Ewha Womans University
Seoul, South Korea

Yonsei University - School of Business
Seoul, South Korea

Chonnam National University
Gwangju, South Korea

Sejong University - Graduate School of Business
Seoul, South Korea

Korea Advanced Institute of Science and Technology (KAIST) - KAIST College of Business
Seoul, South Korea